[boost] [mpl] unexpected behaviour of mpl::add

Subject: [boost] [mpl] unexpected behaviour of mpl::add
From: Thomas Heller (thom.heller_at_[hidden])
Date: 2010-08-19 06:01:12

Hi,

I just noticed something i find very odd.
Considering this example:

mpl::add<mpl::int_<1>, mpl::int_<1>::type

So I was expecting that this metafunction returns a mpl::int<2>
Unfortunately, this was not the case, instead a mpl::integral_c<int, 2> was 
returned.
Is this a bug or a feature?

Regards,

Thomas